Plane polarized light of intensity I₀ is passed through two polarizers,the first one at 45$^{\circ}$to the original plane of polarization and the second rotated an additional 45$^{\circ}$more so that it is perpendicular to the original plane of polarization.What intensity is transmitted? A) 0.50 I₀ B) 0.35 I₀ C) 0.25 I₀ D) 0.13 I₀ E) 0

Question

Quizplus · Accepted Answer

When plane-polarized light is passed through a polarizer, its intensity becomes half. Therefore, the intensity of light that passes through the first polarizer is: I1 = (1/2) I₀ When this light passes through the second polarizer rotated at 45 degrees, the intensity becomes: I2 = (1/2) I1 = (1/2)^2 I₀ = 0.25 I₀ Therefore, the intensity transmitted through both polarizers is 0.25 I₀, which is option C.

Plane Polarized Light of Intensity I0 Is Passed Through Two ∘^{\circ}∘

Plane Polarized Light of Intensity I₀ Is Passed Through Two $^{\circ}$